Reagents for HI 758 Checker HC ®, 25 Tests

Range 0 - 300 ppm in salt water | Colorimetric Method | Resolution 1 ppm

The HI 761 uses an adaptation of the USEPA method 330.5. The reaction between the chlorine and DPD reagent causes a pink tint in the sample.

Range 0 - 20 ppm | ESPA method | Resolution 0.1ppm

Range 0:00 to 2:00 ppm | ASTM D859 Method | 0.01ppm resolution